#define GLUT_NORMAL 0
#define GLUT_OVERLAY 1
-#if defined(_WIN32)
+#if defined(_WIN32) || defined (GLUT_IMPORT_LIB)
/* Stroke font constants (use these in GLUT program). */
#define GLUT_STROKE_ROMAN ((void*)0)
#define GLUT_STROKE_MONO_ROMAN ((void*)1)